Evaluasi penggunaan asam organik sebagai agen pickling dalam penyamakan krom kulit ikan pari

Abstract

The leather industry is a strategic industry capable of converting meat product waste in the form of leather into high-value materials such as shoes, jackets, wallets, and others. Tanning of stingray skin by chrome is interesting to explore, because stingray shell waste has not been widely used for leather. One of the important stages in tanning is pickling that using acid. This study aims to investigate the effects of a variety of different types of acids. Various acids used in the pkling process are formic acid, acetic acid, citric acid, and oxalic acid. The results of the tanning were tested for physical quality, including tests of tensile strength, elongation, softness, tear strength, sewing strength, and shrinkage temperature. The results were analyzed using the one way ANOVA method, and followed by the Duncan Multiple Range Test (DMRT) method. Based on the results of statistical analysis, it was found that stingray skin treated with formic acid had the best results in tensile strength and elongation tests, while the oxalic acid treatment had the best results in tests for softness, tear strength, sewing strength, and shrinkage temperature.